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Priority to JP4672872UpriorityCriticalpatent/JPS537646Y2/ja
Priority to GB5971372Aprioritypatent/GB1412457A/en
Publication of JPS496026UpublicationCriticalpatent/JPS496026U/ja
Priority to US445040Aprioritypatent/US3912952A/en
Application grantedgrantedCritical
Publication of JPS537646Y2publicationCriticalpatent/JPS537646Y2/ja